Coal-sifter



P.0'0oNN0R.

GOAL SIFTER.

(Ho Model.)

Patented Ma 12, 1885.

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UNITED STATES PATENT OFFICE.

PATRICK OGONNOR, OF LAIVRENGE, MASSACHUSETTS.

COAL-SIFTER.

SPECIFICATION forming part of Letters Patent No. 317,574, dated May 12,1885.

Application filed February 2.4, 1885. (No model.)

To all whom it may concern:

Be it known that I, PATRICK OCONNOR, of Lawrence, in the county ofEssex, State of Massachusetts, have invented a certain new and usefulImprovement in Coal-Sifters, of which the following is a descriptionsufficiently full, clear, and exact to enable any person skilled in theart or science to which said invention appertains to make and use thesame, reference being had to the accompanying drawings, forming part ofthis specification, in which-- Figure l is an isometrical perspectiveview representing my improved coal-sifter with the legs folded and thecover closed ready for packing or transportation; and Fig. 2, a verticallongitudinal section of the same in position for use, the auxiliarycover being represented as open.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings.

My invention relates to that class of coalsifters which are designedmore especially for domestic purposes; and it consists in a novelconstruction and arrangement of the parts, as hereinafter more fully setforth and claimed, by which a more effective and otherwise desirablearticle of this character is produced than is now in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation. I

In the drawings, A represents the bottom; B, the upper end; 0, the lowerend; I), the sides; E, the main cover; H, the auxiliary cover; J, thehind or long legs, and Kthe forward or short legs.

The body, consisting of the bottom, sides, and ends,is rectangular inform, but is tapered at its forward or lower end, the end piece 0 beingshorter than the end B, and the sides D converging from x to m, thebottom A and top E being formed to correspond therewith.

Disposed within the body of the sifter, in parallelism with the bottomA, there is an ordinary wire screen, N, attached to and supported by thecleats or ledges 'v, the lower end of the screen terminating in thechute or mouth M, which projects through the end 0, as best seen in Fig.1.

The main cover E is hinged at f to one of the sides D,the auxiliarycover H being hinged at t to the u pper end of said main cover.

The long or hind legs J are pivoted at z,

near their upper ends, to the rear or upper ends of the sides D, theshort or forward legs being pivoted at-Z near their upper ends to theconverging portions of said sides midway between and m.

a An opening, P, is formed in the bottom A, and between said opening andthe lower or front end of said bottom there is a partition, Q, extendingfrom the bottom of the mouth M downwardly through said opening.

In the use of my improvement the sifter is set up, as shown in Fig. 2,with the legs J K unfolded and arranged vertically, and the cover Hopen. The coal to be sifted is then poured into the body of the sifteronto the screen N, and the cover closed, after which the coal will passdownwardly over the screen by gravitation, and be discharged through themouth M, the ashes being separated and falling through the screen ontothe bottom A, and thence passing through the opening P, in a mannerwhich will be readily obvious without a more explicit description.

The object of the partition Q is to stop the ashes as they slide downthe bottom A, and direct them through the opening P into any suitablereceptacle.

If large quantities of coal are to be introduced into the sifter, orwhen the screen requires to be cleansed, the main cover E is raised; butfor ordinary purposes the auxiliary cover only is required.

\Vhen a sifter having legs pivoted to its sides to adapt them to befolded is set up for use, as shown in Fig. 2, it will have'a tendency topitch forward and fall to the ground by gravitation. To obviate thisdifficulty or objection I incline the sides D,and pivot the forward legsto the inclined or converging portions, as described, thereby causingthe shoulders b of the body to come into contact with said legs ,asvthebody descends, the shoulders acting as stops to prevent the sifter fromfall- 1n %n case the coal does not pass readily over the screen N thesifting may be facilitated by oscillating the body of the sifter on thepivots Z 2.

Having thus explained my invention,what I claim is 1. In a coal-sifter,the combination of the following instrumentalities, to wit: a body, ascreen, a main cover, an auxiliary cover, two long and two shortsupportinglegs, the body being provided with discharge-openings for theashes and sifted coal, and having sides which are straight along themain portion of the body and converge near its lower end, the long legsbeing pivoted to the straight portions of the sides, and the short legsto the converging portions, and adapted to engage said convergingportions and prevent the sifter from pitching forward and falling to theground, substantially as described.

2. In a coal-sifter, a body having the sides D, said sides beingstraight from as to y, and converging from m to m, in combination withthe legs J, pivoted to the straight portions, and legs K, pivoted to theconverging portions thereof, substantially as described.

3. lhe improved coal-sifter herein described, the same consisting of thebottom A, provided with the opening 1?, the end 0, provided with themouth M, the sides D, provided with the converging portions 00 m, theend B, screen N, partition Q, covers E H, and legs J K, constructed,combined, and "arranged to operate substantially as and for the purposeset forth.

PATRICK OCONNOR. Vitnesses:

ADOLF I. VoRHoLz, JOHN A. BENOKER.

